1 /*======================================================================
3 A PCMCIA ethernet driver for Asix AX88190-based cards
5 The Asix AX88190 is a NS8390-derived chipset with a few nasty
6 idiosyncracies that make it very inconvenient to support with a
7 standard 8390 driver. This driver is based on pcnet_cs, with the
8 tweaked 8390 code grafted on the end. Much of what I did was to
9 clean up and update a similar driver supplied by Asix, which was
10 adapted by William Lee, william@asix.com.tw.
12 Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net
14 axnet_cs.c 1.28 2002/06/29 06:27:37
16 The network driver code is based on Donald Becker's NE2000 code:
18 Written 1992,1993 by Donald Becker.
19 Copyright 1993 United States Government as represented by the
20 Director, National Security Agency. This software may be used and
21 distributed according to the terms of the GNU General Public License,
22 incorporated herein by reference.
23 Donald Becker may be reached at becker@scyld.com
25 ======================================================================*/
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/ptrace.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/ethtool.h>
37 #include <linux/netdevice.h>
38 #include <linux/crc32.h>
41 #include <pcmcia/cs_types.h>
42 #include <pcmcia/cs.h>
43 #include <pcmcia/cistpl.h>
44 #include <pcmcia/ciscode.h>
45 #include <pcmcia/ds.h>
46 #include <pcmcia/cisreg.h>
49 #include <asm/system.h>
50 #include <asm/byteorder.h>
51 #include <asm/uaccess.h>
53 #define AXNET_CMD 0x00
54 #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */
55 #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */
56 #define AXNET_MII_EEP 0x14 /* Offset of MII access port */
57 #define AXNET_TEST 0x15 /* Offset of TEST Register port */
58 #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */
60 #define AXNET_START_PG 0x40 /* First page of TX buffer */
61 #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */
63 #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */
65 #define IS_AX88190 0x0001
66 #define IS_AX88790 0x0002
68 /*====================================================================*/
70 /* Module parameters */
72 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
73 MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver");
74 MODULE_LICENSE("GPL");
77 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
79 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
80 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
81 static char *version =
82 "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)";
84 #define DEBUG(n, args...)
87 /*====================================================================*/
89 static int axnet_config(struct pcmcia_device *link);
90 static void axnet_release(struct pcmcia_device *link);
91 static int axnet_open(struct net_device *dev);
92 static int axnet_close(struct net_device *dev);
93 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
94 static const struct ethtool_ops netdev_ethtool_ops;
95 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id);
96 static void ei_watchdog(u_long arg);
97 static void axnet_reset_8390(struct net_device *dev);
99 static int mdio_read(unsigned int addr, int phy_id, int loc);
100 static void mdio_write(unsigned int addr, int phy_id, int loc, int value);
102 static void get_8390_hdr(struct net_device *,
103 struct e8390_pkt_hdr *, int);
104 static void block_input(struct net_device *dev, int count,
105 struct sk_buff *skb, int ring_offset);
106 static void block_output(struct net_device *dev, int count,
107 const u_char *buf, const int start_page);
109 static void axnet_detach(struct pcmcia_device *p_dev);
111 static void axdev_setup(struct net_device *dev);
112 static void AX88190_init(struct net_device *dev, int startp);
113 static int ax_open(struct net_device *dev);
114 static int ax_close(struct net_device *dev);
115 static irqreturn_t ax_interrupt(int irq, void *dev_id);
117 /*====================================================================*/
119 typedef struct axnet_dev_t {
120 struct pcmcia_device *p_dev;
123 struct timer_list watchdog;
124 int stale, fast_poll;
131 static inline axnet_dev_t *PRIV(struct net_device *dev)
133 void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device);
137 /*======================================================================
139 axnet_attach() creates an "instance" of the driver, allocating
140 local data structures for one device. The device is registered
143 ======================================================================*/
145 static int axnet_probe(struct pcmcia_device *link)
148 struct net_device *dev;
150 DEBUG(0, "axnet_attach()\n");
152 dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t),
153 "eth%d", axdev_setup);
161 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
162 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
163 link->conf.Attributes = CONF_ENABLE_IRQ;
164 link->conf.IntType = INT_MEMORY_AND_IO;
166 dev->open = &axnet_open;
167 dev->stop = &axnet_close;
168 dev->do_ioctl = &axnet_ioctl;
169 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
171 return axnet_config(link);
174 /*======================================================================
176 This deletes a driver "instance". The device is de-registered
177 with Card Services. If it has been released, all local data
178 structures are freed. Otherwise, the structures will be freed
179 when the device is released.
181 ======================================================================*/
183 static void axnet_detach(struct pcmcia_device *link)
185 struct net_device *dev = link->priv;
187 DEBUG(0, "axnet_detach(0x%p)\n", link);
190 unregister_netdev(dev);
197 /*======================================================================
199 This probes for a card's hardware address by reading the PROM.
201 ======================================================================*/
203 static int get_prom(struct pcmcia_device *link)
205 struct net_device *dev = link->priv;
206 unsigned int ioaddr = dev->base_addr;
209 /* This is based on drivers/net/ne.c */
211 u_char value, offset;
213 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
214 {0x01, EN0_DCFG}, /* Set word-wide access. */
215 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
217 {0x00, EN0_IMR}, /* Mask completion irq. */
219 {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */
220 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
223 {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */
225 {E8390_RREAD+E8390_START, E8390_CMD},
228 /* Not much of a test, but the alternatives are messy */
229 if (link->conf.ConfigBase != 0x03c0)
232 axnet_reset_8390(dev);
235 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
236 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
238 for (i = 0; i < 6; i += 2) {
239 j = inw(ioaddr + AXNET_DATAPORT);
240 dev->dev_addr[i] = j & 0xff;
241 dev->dev_addr[i+1] = j >> 8;
246 /*======================================================================
248 axnet_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static int try_io_port(struct pcmcia_device *link)
260 if (link->io.NumPorts1 == 32) {
261 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
262 if (link->io.NumPorts2 > 0) {
263 /* for master/slave multifunction cards */
264 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
265 link->irq.Attributes =
266 IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;
269 /* This should be two 16-port windows */
270 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
271 link->io.Attributes2 = IO_DATA_PATH_WIDTH_16;
273 if (link->io.BasePort1 == 0) {
274 link->io.IOAddrLines = 16;
275 for (j = 0; j < 0x400; j += 0x20) {
276 link->io.BasePort1 = j ^ 0x300;
277 link->io.BasePort2 = (j ^ 0x300) + 0x10;
278 ret = pcmcia_request_io(link, &link->io);
279 if (ret == CS_SUCCESS) return ret;
283 return pcmcia_request_io(link, &link->io);
287 static int axnet_config(struct pcmcia_device *link)
289 struct net_device *dev = link->priv;
290 axnet_dev_t *info = PRIV(dev);
293 int i, j, last_ret, last_fn;
295 DECLARE_MAC_BUF(mac);
297 DEBUG(0, "axnet_config(0x%p)\n", link);
299 tuple.Attributes = 0;
300 tuple.TupleData = (cisdata_t *)buf;
301 tuple.TupleDataMax = sizeof(buf);
302 tuple.TupleOffset = 0;
304 /* don't trust the CIS on this; Linksys got it wrong */
305 link->conf.Present = 0x63;
307 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
308 tuple.Attributes = 0;
309 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
310 while (last_ret == CS_SUCCESS) {
311 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
312 cistpl_io_t *io = &(parse.cftable_entry.io);
314 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
315 pcmcia_parse_tuple(link, &tuple, &parse) != 0 ||
316 cfg->index == 0 || cfg->io.nwin == 0)
319 link->conf.ConfigIndex = 0x05;
320 /* For multifunction cards, by convention, we configure the
321 network function with window 0, and serial with window 1 */
323 i = (io->win[1].len > io->win[0].len);
324 link->io.BasePort2 = io->win[1-i].base;
325 link->io.NumPorts2 = io->win[1-i].len;
327 i = link->io.NumPorts2 = 0;
329 link->io.BasePort1 = io->win[i].base;
330 link->io.NumPorts1 = io->win[i].len;
331 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
332 if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) {
333 last_ret = try_io_port(link);
334 if (last_ret == CS_SUCCESS) break;
337 last_ret = pcmcia_get_next_tuple(link, &tuple);
339 if (last_ret != CS_SUCCESS) {
340 cs_error(link, RequestIO, last_ret);
344 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
346 if (link->io.NumPorts2 == 8) {
347 link->conf.Attributes |= CONF_ENABLE_SPKR;
348 link->conf.Status = CCSR_AUDIO_ENA;
351 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
352 dev->irq = link->irq.AssignedIRQ;
353 dev->base_addr = link->io.BasePort1;
355 if (!get_prom(link)) {
356 printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n");
357 printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n");
361 ei_status.name = "AX88190";
362 ei_status.word16 = 1;
363 ei_status.tx_start_page = AXNET_START_PG;
364 ei_status.rx_start_page = AXNET_START_PG + TX_PAGES;
365 ei_status.stop_page = AXNET_STOP_PG;
366 ei_status.reset_8390 = &axnet_reset_8390;
367 ei_status.get_8390_hdr = &get_8390_hdr;
368 ei_status.block_input = &block_input;
369 ei_status.block_output = &block_output;
371 if (inb(dev->base_addr + AXNET_TEST) != 0)
372 info->flags |= IS_AX88790;
374 info->flags |= IS_AX88190;
376 if (info->flags & IS_AX88790)
377 outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */
379 for (i = 0; i < 32; i++) {
380 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
381 if ((j != 0) && (j != 0xffff)) break;
384 /* Maybe PHY is in power down mode. (PPD_SET = 1)
385 Bit 2 of CCSR is active low. */
387 conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 };
388 pcmcia_access_configuration_register(link, ®);
389 for (i = 0; i < 32; i++) {
390 j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1);
391 if ((j != 0) && (j != 0xffff)) break;
395 info->phy_id = (i < 32) ? i : -1;
396 link->dev_node = &info->node;
397 SET_NETDEV_DEV(dev, &handle_to_dev(link));
399 if (register_netdev(dev) != 0) {
400 printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n");
401 link->dev_node = NULL;
405 strcpy(info->node.dev_name, dev->name);
407 printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, "
409 dev->name, ((info->flags & IS_AX88790) ? 7 : 1),
410 dev->base_addr, dev->irq,
411 print_mac(mac, dev->dev_addr));
412 if (info->phy_id != -1) {
413 DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j);
415 printk(KERN_NOTICE " No MII transceivers found!\n");
420 cs_error(link, last_fn, last_ret);
426 /*======================================================================
428 After a card is removed, axnet_release() will unregister the net
429 device, and release the PCMCIA configuration. If the device is
430 still open, this will be postponed until it is closed.
432 ======================================================================*/
434 static void axnet_release(struct pcmcia_device *link)
436 pcmcia_disable_device(link);
439 static int axnet_suspend(struct pcmcia_device *link)
441 struct net_device *dev = link->priv;
444 netif_device_detach(dev);
449 static int axnet_resume(struct pcmcia_device *link)
451 struct net_device *dev = link->priv;
454 axnet_reset_8390(dev);
455 AX88190_init(dev, 1);
456 netif_device_attach(dev);
463 /*======================================================================
465 MII interface support
467 ======================================================================*/
469 #define MDIO_SHIFT_CLK 0x01
470 #define MDIO_DATA_WRITE0 0x00
471 #define MDIO_DATA_WRITE1 0x08
472 #define MDIO_DATA_READ 0x04
473 #define MDIO_MASK 0x0f
474 #define MDIO_ENB_IN 0x02
476 static void mdio_sync(unsigned int addr)
479 for (bits = 0; bits < 32; bits++) {
480 outb_p(MDIO_DATA_WRITE1, addr);
481 outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr);
485 static int mdio_read(unsigned int addr, int phy_id, int loc)
487 u_int cmd = (0xf6<<10)|(phy_id<<5)|loc;
491 for (i = 14; i >= 0; i--) {
492 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
494 outb_p(dat | MDIO_SHIFT_CLK, addr);
496 for (i = 19; i > 0; i--) {
497 outb_p(MDIO_ENB_IN, addr);
498 retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0);
499 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
501 return (retval>>1) & 0xffff;
504 static void mdio_write(unsigned int addr, int phy_id, int loc, int value)
506 u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value;
510 for (i = 31; i >= 0; i--) {
511 int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
513 outb_p(dat | MDIO_SHIFT_CLK, addr);
515 for (i = 1; i >= 0; i--) {
516 outb_p(MDIO_ENB_IN, addr);
517 outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr);
521 /*====================================================================*/
523 static int axnet_open(struct net_device *dev)
526 axnet_dev_t *info = PRIV(dev);
527 struct pcmcia_device *link = info->p_dev;
528 unsigned int nic_base = dev->base_addr;
530 DEBUG(2, "axnet_open('%s')\n", dev->name);
532 if (!pcmcia_dev_present(link))
535 outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */
536 ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev);
542 info->link_status = 0x00;
543 init_timer(&info->watchdog);
544 info->watchdog.function = &ei_watchdog;
545 info->watchdog.data = (u_long)dev;
546 info->watchdog.expires = jiffies + HZ;
547 add_timer(&info->watchdog);
552 /*====================================================================*/
554 static int axnet_close(struct net_device *dev)
556 axnet_dev_t *info = PRIV(dev);
557 struct pcmcia_device *link = info->p_dev;
559 DEBUG(2, "axnet_close('%s')\n", dev->name);
562 free_irq(dev->irq, dev);
565 netif_stop_queue(dev);
566 del_timer_sync(&info->watchdog);
571 /*======================================================================
573 Hard reset the card. This used to pause for the same period that
574 a 8390 reset command required, but that shouldn't be necessary.
576 ======================================================================*/
578 static void axnet_reset_8390(struct net_device *dev)
580 unsigned int nic_base = dev->base_addr;
583 ei_status.txing = ei_status.dmaing = 0;
585 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD);
587 outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET);
589 for (i = 0; i < 100; i++) {
590 if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0)
594 outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */
597 printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n",
600 } /* axnet_reset_8390 */
602 /*====================================================================*/
604 static irqreturn_t ei_irq_wrapper(int irq, void *dev_id)
606 struct net_device *dev = dev_id;
607 PRIV(dev)->stale = 0;
608 return ax_interrupt(irq, dev_id);
611 static void ei_watchdog(u_long arg)
613 struct net_device *dev = (struct net_device *)(arg);
614 axnet_dev_t *info = PRIV(dev);
615 unsigned int nic_base = dev->base_addr;
616 unsigned int mii_addr = nic_base + AXNET_MII_EEP;
619 if (!netif_device_present(dev)) goto reschedule;
621 /* Check for pending interrupt with expired latency timer: with
622 this, we can limp along even if the interrupt is blocked */
623 if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) {
624 if (!info->fast_poll)
625 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
626 ei_irq_wrapper(dev->irq, dev);
627 info->fast_poll = HZ;
629 if (info->fast_poll) {
631 info->watchdog.expires = jiffies + 1;
632 add_timer(&info->watchdog);
636 if (info->phy_id < 0)
638 link = mdio_read(mii_addr, info->phy_id, 1);
639 if (!link || (link == 0xffff)) {
640 printk(KERN_INFO "%s: MII is missing!\n", dev->name);
646 if (link != info->link_status) {
647 u_short p = mdio_read(mii_addr, info->phy_id, 5);
648 printk(KERN_INFO "%s: %s link beat\n", dev->name,
649 (link) ? "found" : "lost");
651 info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00;
653 printk(KERN_INFO "%s: autonegotiation complete: "
654 "%sbaseT-%cD selected\n", dev->name,
655 ((p & 0x0180) ? "100" : "10"),
656 ((p & 0x0140) ? 'F' : 'H'));
658 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
660 AX88190_init(dev, 1);
662 info->link_status = link;
666 info->watchdog.expires = jiffies + HZ;
667 add_timer(&info->watchdog);
670 static void netdev_get_drvinfo(struct net_device *dev,
671 struct ethtool_drvinfo *info)
673 strcpy(info->driver, "axnet_cs");
676 static const struct ethtool_ops netdev_ethtool_ops = {
677 .get_drvinfo = netdev_get_drvinfo,
680 /*====================================================================*/
682 static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
684 axnet_dev_t *info = PRIV(dev);
685 u16 *data = (u16 *)&rq->ifr_ifru;
686 unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP;
689 data[0] = info->phy_id;
690 case SIOCGMIIREG: /* Read MII PHY register. */
691 data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f);
693 case SIOCSMIIREG: /* Write MII PHY register. */
694 if (!capable(CAP_NET_ADMIN))
696 mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]);
702 /*====================================================================*/
704 static void get_8390_hdr(struct net_device *dev,
705 struct e8390_pkt_hdr *hdr,
708 unsigned int nic_base = dev->base_addr;
710 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
711 outb_p(ring_page, nic_base + EN0_RSARHI);
712 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
714 insw(nic_base + AXNET_DATAPORT, hdr,
715 sizeof(struct e8390_pkt_hdr)>>1);
716 /* Fix for big endian systems */
717 hdr->count = le16_to_cpu(hdr->count);
721 /*====================================================================*/
723 static void block_input(struct net_device *dev, int count,
724 struct sk_buff *skb, int ring_offset)
726 unsigned int nic_base = dev->base_addr;
727 int xfer_count = count;
728 char *buf = skb->data;
731 if ((ei_debug > 4) && (count != 4))
732 printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4);
734 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
735 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
736 outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD);
738 insw(nic_base + AXNET_DATAPORT,buf,count>>1);
740 buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++;
744 /*====================================================================*/
746 static void block_output(struct net_device *dev, int count,
747 const u_char *buf, const int start_page)
749 unsigned int nic_base = dev->base_addr;
753 printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count);
756 /* Round the count up for word writes. Do we need to do this?
757 What effect will an odd byte count have on the 8390?
758 I should check someday. */
762 outb_p(0x00, nic_base + EN0_RSARLO);
763 outb_p(start_page, nic_base + EN0_RSARHI);
764 outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD);
765 outsw(nic_base + AXNET_DATAPORT, buf, count>>1);
768 static struct pcmcia_device_id axnet_ids[] = {
769 PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081),
770 PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301),
771 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301),
772 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303),
773 PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309),
774 PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106),
775 PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab),
776 PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202),
777 PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090),
778 PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc),
779 PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef),
780 PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef),
781 PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1),
782 PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc),
783 PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b),
784 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5),
785 PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e),
786 PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90),
787 PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2),
788 PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8),
789 PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609),
790 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04),
791 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116),
792 PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058),
793 PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef),
796 MODULE_DEVICE_TABLE(pcmcia, axnet_ids);
798 static struct pcmcia_driver axnet_cs_driver = {
799 .owner = THIS_MODULE,
803 .probe = axnet_probe,
804 .remove = axnet_detach,
805 .id_table = axnet_ids,
806 .suspend = axnet_suspend,
807 .resume = axnet_resume,
810 static int __init init_axnet_cs(void)
812 return pcmcia_register_driver(&axnet_cs_driver);
815 static void __exit exit_axnet_cs(void)
817 pcmcia_unregister_driver(&axnet_cs_driver);
820 module_init(init_axnet_cs);
821 module_exit(exit_axnet_cs);
823 /*====================================================================*/
825 /* 8390.c: A general NS8390 ethernet driver core for linux. */
827 Written 1992-94 by Donald Becker.
829 Copyright 1993 United States Government as represented by the
830 Director, National Security Agency.
832 This software may be used and distributed according to the terms
833 of the GNU General Public License, incorporated herein by reference.
835 The author may be reached as becker@scyld.com, or C/O
836 Scyld Computing Corporation
837 410 Severn Ave., Suite 210
840 This is the chip-specific code for many 8390-based ethernet adaptors.
841 This is not a complete driver, it must be combined with board-specific
842 code such as ne.c, wd.c, 3c503.c, etc.
844 Seeing how at least eight drivers use this code, (not counting the
845 PCMCIA ones either) it is easy to break some card by what seems like
846 a simple innocent change. Please contact me or Donald if you think
847 you have found something that needs changing. -- PG
851 Paul Gortmaker : remove set_bit lock, other cleanups.
852 Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
853 ei_block_input() for eth_io_copy_and_sum().
854 Paul Gortmaker : exchange static int ei_pingpong for a #define,
855 also add better Tx error handling.
856 Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
857 Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
858 Paul Gortmaker : tweak ANK's above multicast changes a bit.
859 Paul Gortmaker : update packet statistics for v2.1.x
860 Alan Cox : support arbitary stupid port mappings on the
861 68K Macintosh. Support >16bit I/O spaces
862 Paul Gortmaker : add kmod support for auto-loading of the 8390
863 module by all drivers that require it.
864 Alan Cox : Spinlocking work, added 'BUG_83C690'
865 Paul Gortmaker : Separate out Tx timeout code from Tx path.
868 The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
872 static const char *version_8390 =
873 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n";
875 #include <linux/bitops.h>
877 #include <linux/fcntl.h>
878 #include <linux/in.h>
879 #include <linux/interrupt.h>
881 #include <linux/etherdevice.h>
885 /* These are the operational function interfaces to board-specific
887 void reset_8390(struct net_device *dev)
888 Resets the board associated with DEV, including a hardware reset of
889 the 8390. This is only called when there is a transmit timeout, and
890 it is always followed by 8390_init().
891 void block_output(struct net_device *dev, int count, const unsigned char *buf,
893 Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
894 "page" value uses the 8390's 256-byte pages.
895 void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
896 Read the 4 byte, page aligned 8390 header. *If* there is a
897 subsequent read, it will be of the rest of the packet.
898 void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
899 Read COUNT bytes from the packet buffer into the skb data area. Start
900 reading from RING_OFFSET, the address as the 8390 sees it. This will always
901 follow the read of the 8390 header.
903 #define ei_reset_8390 (ei_local->reset_8390)
904 #define ei_block_output (ei_local->block_output)
905 #define ei_block_input (ei_local->block_input)
906 #define ei_get_8390_hdr (ei_local->get_8390_hdr)
908 /* use 0 for production, 1 for verification, >2 for debug */
913 /* Index to functions. */
914 static void ei_tx_intr(struct net_device *dev);
915 static void ei_tx_err(struct net_device *dev);
916 static void ei_tx_timeout(struct net_device *dev);
917 static void ei_receive(struct net_device *dev);
918 static void ei_rx_overrun(struct net_device *dev);
920 /* Routines generic to NS8390-based boards. */
921 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
923 static void set_multicast_list(struct net_device *dev);
924 static void do_set_multicast_list(struct net_device *dev);
927 * SMP and the 8390 setup.
929 * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is
930 * a page register that controls bank and packet buffer access. We guard
931 * this with ei_local->page_lock. Nobody should assume or set the page other
932 * than zero when the lock is not held. Lock holders must restore page 0
933 * before unlocking. Even pure readers must take the lock to protect in
936 * To make life difficult the chip can also be very slow. We therefore can't
937 * just use spinlocks. For the longer lockups we disable the irq the device
938 * sits on and hold the lock. We must hold the lock because there is a dual
939 * processor case other than interrupts (get stats/set multicast list in
940 * parallel with each other and transmit).
942 * Note: in theory we can just disable the irq on the card _but_ there is
943 * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
944 * enter lock, take the queued irq. So we waddle instead of flying.
946 * Finally by special arrangement for the purpose of being generally
947 * annoying the transmit function is called bh atomic. That places
948 * restrictions on the user context callers as disable_irq won't save
953 * ax_open - Open/initialize the board.
954 * @dev: network device to initialize
956 * This routine goes all-out, setting everything
957 * up anew at each open, even though many of these registers should only
958 * need to be set once at boot.
960 static int ax_open(struct net_device *dev)
963 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
965 #ifdef HAVE_TX_TIMEOUT
966 /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout
967 wrapper that does e.g. media check & then calls ei_tx_timeout. */
968 if (dev->tx_timeout == NULL)
969 dev->tx_timeout = ei_tx_timeout;
970 if (dev->watchdog_timeo <= 0)
971 dev->watchdog_timeo = TX_TIMEOUT;
975 * Grab the page lock so we own the register set, then call
979 spin_lock_irqsave(&ei_local->page_lock, flags);
980 AX88190_init(dev, 1);
981 /* Set the flag before we drop the lock, That way the IRQ arrives
982 after its set and we get no silly warnings */
983 netif_start_queue(dev);
984 spin_unlock_irqrestore(&ei_local->page_lock, flags);
985 ei_local->irqlock = 0;
989 #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock)
992 * ax_close - shut down network device
993 * @dev: network device to close
995 * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done.
997 static int ax_close(struct net_device *dev)
1002 * Hold the page lock during close
1005 spin_lock_irqsave(&dev_lock(dev), flags);
1006 AX88190_init(dev, 0);
1007 spin_unlock_irqrestore(&dev_lock(dev), flags);
1008 netif_stop_queue(dev);
1013 * ei_tx_timeout - handle transmit time out condition
1014 * @dev: network device which has apparently fallen asleep
1016 * Called by kernel when device never acknowledges a transmit has
1017 * completed (or failed) - i.e. never posted a Tx related interrupt.
1020 static void ei_tx_timeout(struct net_device *dev)
1022 long e8390_base = dev->base_addr;
1023 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1024 int txsr, isr, tickssofar = jiffies - dev->trans_start;
1025 unsigned long flags;
1027 dev->stats.tx_errors++;
1029 spin_lock_irqsave(&ei_local->page_lock, flags);
1030 txsr = inb(e8390_base+EN0_TSR);
1031 isr = inb(e8390_base+EN0_ISR);
1032 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1034 printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n",
1035 dev->name, (txsr & ENTSR_ABT) ? "excess collisions." :
1036 (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar);
1038 if (!isr && !dev->stats.tx_packets)
1040 /* The 8390 probably hasn't gotten on the cable yet. */
1041 ei_local->interface_num ^= 1; /* Try a different xcvr. */
1044 /* Ugly but a reset can be slow, yet must be protected */
1046 spin_lock_irqsave(&ei_local->page_lock, flags);
1048 /* Try to restart the card. Perhaps the user has fixed something. */
1050 AX88190_init(dev, 1);
1052 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1053 netif_wake_queue(dev);
1057 * ei_start_xmit - begin packet transmission
1058 * @skb: packet to be sent
1059 * @dev: network device to which packet is sent
1061 * Sends a packet to an 8390 network device.
1064 static int ei_start_xmit(struct sk_buff *skb, struct net_device *dev)
1066 long e8390_base = dev->base_addr;
1067 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1068 int length, send_length, output_page;
1069 unsigned long flags;
1070 u8 packet[ETH_ZLEN];
1072 netif_stop_queue(dev);
1076 /* Mask interrupts from the ethercard.
1077 SMP: We have to grab the lock here otherwise the IRQ handler
1078 on another CPU can flip window and race the IRQ mask set. We end
1079 up trashing the mcast filter not disabling irqs if we don't lock */
1081 spin_lock_irqsave(&ei_local->page_lock, flags);
1082 outb_p(0x00, e8390_base + EN0_IMR);
1083 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1086 * Slow phase with lock held.
1089 spin_lock_irqsave(&ei_local->page_lock, flags);
1091 ei_local->irqlock = 1;
1093 send_length = max(length, ETH_ZLEN);
1096 * We have two Tx slots available for use. Find the first free
1097 * slot, and then perform some sanity checks. With two Tx bufs,
1098 * you get very close to transmitting back-to-back packets. With
1099 * only one Tx buf, the transmitter sits idle while you reload the
1100 * card, leaving a substantial gap between each transmitted packet.
1103 if (ei_local->tx1 == 0)
1105 output_page = ei_local->tx_start_page;
1106 ei_local->tx1 = send_length;
1107 if (ei_debug && ei_local->tx2 > 0)
1108 printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n",
1109 dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing);
1111 else if (ei_local->tx2 == 0)
1113 output_page = ei_local->tx_start_page + TX_PAGES/2;
1114 ei_local->tx2 = send_length;
1115 if (ei_debug && ei_local->tx1 > 0)
1116 printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n",
1117 dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing);
1120 { /* We should never get here. */
1122 printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n",
1123 dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx);
1124 ei_local->irqlock = 0;
1125 netif_stop_queue(dev);
1126 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1127 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1128 dev->stats.tx_errors++;
1133 * Okay, now upload the packet and trigger a send if the transmitter
1134 * isn't already sending. If it is busy, the interrupt handler will
1135 * trigger the send later, upon receiving a Tx done interrupt.
1138 if (length == skb->len)
1139 ei_block_output(dev, length, skb->data, output_page);
1141 memset(packet, 0, ETH_ZLEN);
1142 skb_copy_from_linear_data(skb, packet, skb->len);
1143 ei_block_output(dev, length, packet, output_page);
1146 if (! ei_local->txing)
1148 ei_local->txing = 1;
1149 NS8390_trigger_send(dev, send_length, output_page);
1150 dev->trans_start = jiffies;
1151 if (output_page == ei_local->tx_start_page)
1154 ei_local->lasttx = -1;
1159 ei_local->lasttx = -2;
1162 else ei_local->txqueue++;
1164 if (ei_local->tx1 && ei_local->tx2)
1165 netif_stop_queue(dev);
1167 netif_start_queue(dev);
1169 /* Turn 8390 interrupts back on. */
1170 ei_local->irqlock = 0;
1171 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1173 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1175 dev_kfree_skb (skb);
1176 dev->stats.tx_bytes += send_length;
1182 * ax_interrupt - handle the interrupts from an 8390
1183 * @irq: interrupt number
1184 * @dev_id: a pointer to the net_device
1187 * Handle the ether interface interrupts. We pull packets from
1188 * the 8390 via the card specific functions and fire them at the networking
1189 * stack. We also handle transmit completions and wake the transmit path if
1190 * necessary. We also update the counters and do other housekeeping as
1194 static irqreturn_t ax_interrupt(int irq, void *dev_id)
1196 struct net_device *dev = dev_id;
1198 int interrupts, nr_serviced = 0, i;
1199 struct ei_device *ei_local;
1202 e8390_base = dev->base_addr;
1203 ei_local = netdev_priv(dev);
1206 * Protect the irq test too.
1209 spin_lock(&ei_local->page_lock);
1211 if (ei_local->irqlock)
1213 #if 1 /* This might just be an interrupt for a PCI device sharing this line */
1214 /* The "irqlock" check is only for testing. */
1215 printk(ei_local->irqlock
1216 ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n"
1217 : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n",
1218 dev->name, inb_p(e8390_base + EN0_ISR),
1219 inb_p(e8390_base + EN0_IMR));
1221 spin_unlock(&ei_local->page_lock);
1226 printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name,
1227 inb_p(e8390_base + EN0_ISR));
1229 outb_p(0x00, e8390_base + EN0_ISR);
1230 ei_local->irqlock = 1;
1232 /* !!Assumption!! -- we stay in page 0. Don't break this. */
1233 while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0
1234 && ++nr_serviced < MAX_SERVICE)
1236 if (!netif_running(dev) || (interrupts == 0xff)) {
1238 printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name);
1239 outb_p(interrupts, e8390_base + EN0_ISR);
1245 /* AX88190 bug fix. */
1246 outb_p(interrupts, e8390_base + EN0_ISR);
1247 for (i = 0; i < 10; i++) {
1248 if (!(inb(e8390_base + EN0_ISR) & interrupts))
1250 outb_p(0, e8390_base + EN0_ISR);
1251 outb_p(interrupts, e8390_base + EN0_ISR);
1253 if (interrupts & ENISR_OVER)
1255 else if (interrupts & (ENISR_RX+ENISR_RX_ERR))
1257 /* Got a good (?) packet. */
1260 /* Push the next to-transmit packet through. */
1261 if (interrupts & ENISR_TX)
1263 else if (interrupts & ENISR_TX_ERR)
1266 if (interrupts & ENISR_COUNTERS)
1268 dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0);
1269 dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1);
1270 dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2);
1274 if (interrupts && ei_debug > 3)
1277 if (nr_serviced >= MAX_SERVICE)
1279 /* 0xFF is valid for a card removal */
1280 if(interrupts!=0xFF)
1281 printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n",
1282 dev->name, interrupts);
1283 outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
1285 printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts);
1286 outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
1290 /* Turn 8390 interrupts back on. */
1291 ei_local->irqlock = 0;
1292 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1294 spin_unlock(&ei_local->page_lock);
1295 return IRQ_RETVAL(handled);
1299 * ei_tx_err - handle transmitter error
1300 * @dev: network device which threw the exception
1302 * A transmitter error has happened. Most likely excess collisions (which
1303 * is a fairly normal condition). If the error is one where the Tx will
1304 * have been aborted, we try and send another one right away, instead of
1305 * letting the failed packet sit and collect dust in the Tx buffer. This
1306 * is a much better solution as it avoids kernel based Tx timeouts, and
1307 * an unnecessary card reset.
1309 * Called with lock held.
1312 static void ei_tx_err(struct net_device *dev)
1314 long e8390_base = dev->base_addr;
1315 unsigned char txsr = inb_p(e8390_base+EN0_TSR);
1316 unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
1318 #ifdef VERBOSE_ERROR_DUMP
1319 printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr);
1320 if (txsr & ENTSR_ABT)
1321 printk("excess-collisions ");
1322 if (txsr & ENTSR_ND)
1323 printk("non-deferral ");
1324 if (txsr & ENTSR_CRS)
1325 printk("lost-carrier ");
1326 if (txsr & ENTSR_FU)
1327 printk("FIFO-underrun ");
1328 if (txsr & ENTSR_CDH)
1329 printk("lost-heartbeat ");
1337 dev->stats.tx_errors++;
1338 if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++;
1339 if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++;
1340 if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++;
1345 * ei_tx_intr - transmit interrupt handler
1346 * @dev: network device for which tx intr is handled
1348 * We have finished a transmit: check for errors and then trigger the next
1349 * packet to be sent. Called with lock held.
1352 static void ei_tx_intr(struct net_device *dev)
1354 long e8390_base = dev->base_addr;
1355 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1356 int status = inb(e8390_base + EN0_TSR);
1359 * There are two Tx buffers, see which one finished, and trigger
1360 * the send of another one if it exists.
1362 ei_local->txqueue--;
1364 if (ei_local->tx1 < 0)
1366 if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
1367 printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n",
1368 ei_local->name, ei_local->lasttx, ei_local->tx1);
1370 if (ei_local->tx2 > 0)
1372 ei_local->txing = 1;
1373 NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
1374 dev->trans_start = jiffies;
1376 ei_local->lasttx = 2;
1378 else ei_local->lasttx = 20, ei_local->txing = 0;
1380 else if (ei_local->tx2 < 0)
1382 if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
1383 printk("%s: bogus last_tx_buffer %d, tx2=%d.\n",
1384 ei_local->name, ei_local->lasttx, ei_local->tx2);
1386 if (ei_local->tx1 > 0)
1388 ei_local->txing = 1;
1389 NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
1390 dev->trans_start = jiffies;
1392 ei_local->lasttx = 1;
1395 ei_local->lasttx = 10, ei_local->txing = 0;
1397 // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n",
1398 // dev->name, ei_local->lasttx);
1400 /* Minimize Tx latency: update the statistics after we restart TXing. */
1401 if (status & ENTSR_COL)
1402 dev->stats.collisions++;
1403 if (status & ENTSR_PTX)
1404 dev->stats.tx_packets++;
1407 dev->stats.tx_errors++;
1408 if (status & ENTSR_ABT)
1410 dev->stats.tx_aborted_errors++;
1411 dev->stats.collisions += 16;
1413 if (status & ENTSR_CRS)
1414 dev->stats.tx_carrier_errors++;
1415 if (status & ENTSR_FU)
1416 dev->stats.tx_fifo_errors++;
1417 if (status & ENTSR_CDH)
1418 dev->stats.tx_heartbeat_errors++;
1419 if (status & ENTSR_OWC)
1420 dev->stats.tx_window_errors++;
1422 netif_wake_queue(dev);
1426 * ei_receive - receive some packets
1427 * @dev: network device with which receive will be run
1429 * We have a good packet(s), get it/them out of the buffers.
1430 * Called with lock held.
1433 static void ei_receive(struct net_device *dev)
1435 long e8390_base = dev->base_addr;
1436 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1437 unsigned char rxing_page, this_frame, next_frame;
1438 unsigned short current_offset;
1439 int rx_pkt_count = 0;
1440 struct e8390_pkt_hdr rx_frame;
1442 while (++rx_pkt_count < 10)
1444 int pkt_len, pkt_stat;
1446 /* Get the rx page (incoming packet pointer). */
1447 rxing_page = inb_p(e8390_base + EN1_CURPAG -1);
1449 /* Remove one frame from the ring. Boundary is always a page behind. */
1450 this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1;
1451 if (this_frame >= ei_local->stop_page)
1452 this_frame = ei_local->rx_start_page;
1454 /* Someday we'll omit the previous, iff we never get this message.
1455 (There is at least one clone claimed to have a problem.)
1457 Keep quiet if it looks like a card removal. One problem here
1458 is that some clones crash in roughly the same way.
1460 if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF))
1461 printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n",
1462 dev->name, this_frame, ei_local->current_page);
1464 if (this_frame == rxing_page) /* Read all the frames? */
1465 break; /* Done for now */
1467 current_offset = this_frame << 8;
1468 ei_get_8390_hdr(dev, &rx_frame, this_frame);
1470 pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
1471 pkt_stat = rx_frame.status;
1473 next_frame = this_frame + 1 + ((pkt_len+4)>>8);
1475 if (pkt_len < 60 || pkt_len > 1518)
1478 printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n",
1479 dev->name, rx_frame.count, rx_frame.status,
1481 dev->stats.rx_errors++;
1482 dev->stats.rx_length_errors++;
1484 else if ((pkt_stat & 0x0F) == ENRSR_RXOK)
1486 struct sk_buff *skb;
1488 skb = dev_alloc_skb(pkt_len+2);
1492 printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n",
1493 dev->name, pkt_len);
1494 dev->stats.rx_dropped++;
1499 skb_reserve(skb,2); /* IP headers on 16 byte boundaries */
1500 skb_put(skb, pkt_len); /* Make room */
1501 ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
1502 skb->protocol=eth_type_trans(skb,dev);
1504 dev->last_rx = jiffies;
1505 dev->stats.rx_packets++;
1506 dev->stats.rx_bytes += pkt_len;
1507 if (pkt_stat & ENRSR_PHY)
1508 dev->stats.multicast++;
1514 printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n",
1515 dev->name, rx_frame.status, rx_frame.next,
1517 dev->stats.rx_errors++;
1518 /* NB: The NIC counts CRC, frame and missed errors. */
1519 if (pkt_stat & ENRSR_FO)
1520 dev->stats.rx_fifo_errors++;
1522 next_frame = rx_frame.next;
1524 /* This _should_ never happen: it's here for avoiding bad clones. */
1525 if (next_frame >= ei_local->stop_page) {
1526 printk("%s: next frame inconsistency, %#2x\n", dev->name,
1528 next_frame = ei_local->rx_start_page;
1530 ei_local->current_page = next_frame;
1531 outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
1538 * ei_rx_overrun - handle receiver overrun
1539 * @dev: network device which threw exception
1541 * We have a receiver overrun: we have to kick the 8390 to get it started
1542 * again. Problem is that you have to kick it exactly as NS prescribes in
1543 * the updated datasheets, or "the NIC may act in an unpredictable manner."
1544 * This includes causing "the NIC to defer indefinitely when it is stopped
1545 * on a busy network." Ugh.
1546 * Called with lock held. Don't call this with the interrupts off or your
1547 * computer will hate you - it takes 10ms or so.
1550 static void ei_rx_overrun(struct net_device *dev)
1552 axnet_dev_t *info = PRIV(dev);
1553 long e8390_base = dev->base_addr;
1554 unsigned char was_txing, must_resend = 0;
1557 * Record whether a Tx was in progress and then issue the
1560 was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
1561 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1564 printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name);
1565 dev->stats.rx_over_errors++;
1568 * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
1569 * Early datasheets said to poll the reset bit, but now they say that
1570 * it "is not a reliable indicator and subsequently should be ignored."
1571 * We wait at least 10ms.
1577 * Reset RBCR[01] back to zero as per magic incantation.
1579 outb_p(0x00, e8390_base+EN0_RCNTLO);
1580 outb_p(0x00, e8390_base+EN0_RCNTHI);
1583 * See if any Tx was interrupted or not. According to NS, this
1584 * step is vital, and skipping it will cause no end of havoc.
1589 unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
1595 * Have to enter loopback mode and then restart the NIC before
1596 * you are allowed to slurp packets up off the ring.
1598 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
1599 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
1602 * Clear the Rx ring of all the debris, and ack the interrupt.
1607 * Leave loopback mode, and resend any packet that got stopped.
1609 outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR);
1611 outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
1615 * Collect the stats. This is called unlocked and from several contexts.
1618 static struct net_device_stats *get_stats(struct net_device *dev)
1620 long ioaddr = dev->base_addr;
1621 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1622 unsigned long flags;
1624 /* If the card is stopped, just return the present stats. */
1625 if (!netif_running(dev))
1628 spin_lock_irqsave(&ei_local->page_lock,flags);
1629 /* Read the counter registers, assuming we are in page 0. */
1630 dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0);
1631 dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1);
1632 dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2);
1633 spin_unlock_irqrestore(&ei_local->page_lock, flags);
1639 * Form the 64 bit 8390 multicast table from the linked list of addresses
1640 * associated with this dev structure.
1643 static inline void make_mc_bits(u8 *bits, struct net_device *dev)
1645 struct dev_mc_list *dmi;
1648 for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
1650 crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
1652 * The 8390 uses the 6 most significant bits of the
1653 * CRC to index the multicast table.
1655 bits[crc>>29] |= (1<<((crc>>26)&7));
1660 * do_set_multicast_list - set/clear multicast filter
1661 * @dev: net device for which multicast filter is adjusted
1663 * Set or clear the multicast filter for this adaptor.
1664 * Must be called with lock held.
1667 static void do_set_multicast_list(struct net_device *dev)
1669 long e8390_base = dev->base_addr;
1671 struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
1673 if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
1674 memset(ei_local->mcfilter, 0, 8);
1676 make_mc_bits(ei_local->mcfilter, dev);
1678 /* set to accept-all */
1679 memset(ei_local->mcfilter, 0xFF, 8);
1682 outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
1683 for(i = 0; i < 8; i++)
1685 outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
1687 outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
1689 if(dev->flags&IFF_PROMISC)
1690 outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
1691 else if(dev->flags&IFF_ALLMULTI || dev->mc_list)
1692 outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR);
1694 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR);
1696 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1700 * Called without lock held. This is invoked from user context and may
1701 * be parallel to just about everything else. Its also fairly quick and
1702 * not called too often. Must protect against both bh and irq users
1705 static void set_multicast_list(struct net_device *dev)
1707 unsigned long flags;
1709 spin_lock_irqsave(&dev_lock(dev), flags);
1710 do_set_multicast_list(dev);
1711 spin_unlock_irqrestore(&dev_lock(dev), flags);
1715 * axdev_setup - init rest of 8390 device struct
1716 * @dev: network device structure to init
1718 * Initialize the rest of the 8390 device structure. Do NOT __init
1719 * this, as it is used by 8390 based modular drivers too.
1722 static void axdev_setup(struct net_device *dev)
1724 struct ei_device *ei_local;
1726 printk(version_8390);
1728 ei_local = (struct ei_device *)netdev_priv(dev);
1729 spin_lock_init(&ei_local->page_lock);
1731 dev->hard_start_xmit = &ei_start_xmit;
1732 dev->get_stats = get_stats;
1733 dev->set_multicast_list = &set_multicast_list;
1738 /* This page of functions should be 8390 generic */
1739 /* Follow National Semi's recommendations for initializing the "NIC". */
1742 * AX88190_init - initialize 8390 hardware
1743 * @dev: network device to initialize
1744 * @startp: boolean. non-zero value to initiate chip processing
1746 * Must be called with lock held.
1749 static void AX88190_init(struct net_device *dev, int startp)
1751 axnet_dev_t *info = PRIV(dev);
1752 long e8390_base = dev->base_addr;
1753 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
1755 int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48;
1757 if(sizeof(struct e8390_pkt_hdr)!=4)
1758 panic("8390.c: header struct mispacked\n");
1759 /* Follow National Semi's recommendations for initing the DP83902. */
1760 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
1761 outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
1762 /* Clear the remote byte count registers. */
1763 outb_p(0x00, e8390_base + EN0_RCNTLO);
1764 outb_p(0x00, e8390_base + EN0_RCNTHI);
1765 /* Set to monitor and loopback mode -- this is vital!. */
1766 outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */
1767 outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
1768 /* Set the transmit page and receive ring. */
1769 outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
1770 ei_local->tx1 = ei_local->tx2 = 0;
1771 outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
1772 outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
1773 ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
1774 outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
1775 /* Clear the pending interrupts and mask. */
1776 outb_p(0xFF, e8390_base + EN0_ISR);
1777 outb_p(0x00, e8390_base + EN0_IMR);
1779 /* Copy the station address into the DS8390 registers. */
1781 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
1782 for(i = 0; i < 6; i++)
1784 outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
1785 if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
1786 printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
1789 outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
1790 outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
1792 netif_start_queue(dev);
1793 ei_local->tx1 = ei_local->tx2 = 0;
1794 ei_local->txing = 0;
1798 outb_p(0xff, e8390_base + EN0_ISR);
1799 outb_p(ENISR_ALL, e8390_base + EN0_IMR);
1800 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
1801 outb_p(E8390_TXCONFIG | info->duplex_flag,
1802 e8390_base + EN0_TXCR); /* xmit on. */
1803 /* 3c503 TechMan says rxconfig only after the NIC is started. */
1804 outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */
1805 do_set_multicast_list(dev); /* (re)load the mcast table */
1809 /* Trigger a transmit start, assuming the length is valid.
1810 Always called with the page lock held */
1812 static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
1815 long e8390_base = dev->base_addr;
1816 struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);
1818 if (inb_p(e8390_base) & E8390_TRANS)
1820 printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
1824 outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
1825 outb_p(length >> 8, e8390_base + EN0_TCNTHI);
1826 outb_p(start_page, e8390_base + EN0_TPSR);
1827 outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);